Cables to Go ZRC0104C User Manual page 9

LAN clients. Therefore the LAN clients "share" the only one WAN IP address, and it is called
Broadband Switch.
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Firewall
ZSR0104C SERIES provides prevents Ping and TCP/UDP Echo Attack, Hacker's Scan, and
Denial of Service (DoS). Also it offers Service Filter and URL Filter (by Keyword).
‧ Dynamic DNS
Dynamic DNS (Domain Name System) allows you to register and obtain a fixed domain name
from DDNS service providers that ZSR0104C SERIES supports. When your ZSR0104C
SERIES obtains a dynamic public IP address, your ZSR0104C SERIES will inform the DDNS
service provider an updated IP address. Any a connection toward your domain name will be
mapped to the updated IP address by your DDNS service provider. You can be found easily by
connecting to your fixed domain name.
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Virtual Server (Port Forwarding)
ZSR0104C SERIES can forward the service packet specified with a port number to the LAN
host specified by the LAN IP address. In other words, ZSR0104C SERIES can open the port
for the service with specified port number and then "forward" the port to a LAN host. Thus it
is called Port Forwarding, too.
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VPN Pass-Through
In a Virtual Private Network, ZSR0104C SERIES supports the tunneling of Point-to-Point
Tunneling Protocol (PPTP) packet and allows it to enter the LAN that is the endpoint of the
VPN.
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Special Application
Certain Internet applications use multiple ports, port ranges, dynamically assigned ports, and
special protocols. ZSR0104C SERIES supports the transparent pass-through of these special
applications, including FTP, ICMP, NetMeeting / H.323, Real Radio, Quick Time, MSN
Messenger, etc. and many popular Internet Games.
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Public DMZ Host
Public DMZ Host is a device with a public IP address on the LAN side. ZSR0104C SERIES
provides the tunnel service for data traffic between the Public DMZ Host and the Internet.
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Local DMZ Host
Local DMZ Host is a device with the private IP address on the LAN side. ZSR0104C SERIES
can forward the traffic initiated from the Internet to the Local DMZ Host.
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DHCP Client
ZSR0104C SERIES can work as DHCP client and obtain an IP address automatically from the
Internet Service Provider or a DHCP server on the WAN side.
•
DHCP Server
As DHCP server, ZSR0104C SERIES can automatically assign TCP/IP settings to each client
PC on the LAN side and remember each client's IP address corresponding to the client's
MAC address. When ZSR0104C SERIES assigns TCP/IP settings in the next time, the LAN
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